Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Contactless pick-and-place of millimetric objects using inverted near-field acoustic levitation

Full text
Andrade, Marco A. B. [1] ; Ramos, Tiago S. [2] ; Adamowski, Julio C. [3] ; Marzo, Asier [4]
Total Authors: 4
[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, SP - Brazil
[2] Univ Massachusetts, Phys Dept, Amherst, MA 01003 - USA
[3] Univ Sao Paulo, Escola Politecn, BR-05508030 Sao Paulo - Brazil
[4] Univ Publ Navarra, UpnaLab, Navarra 31006 - Spain
Total Affiliations: 4
Document type: Journal article
Source: Applied Physics Letters; v. 116, n. 5 FEB 3 2020.
Web of Science Citations: 0

We model and realize an ultrasonic contactless pick-and-place device capable of picking, self-centering, self-orienting, translating, and releasing flat millimetric objects. The device is an ultrasonic Langevin transducer operating at 21 kHz that radiates into air through a tapered tip. Objects are trapped few micrometers below the tip due to the near-field acoustic levitation phenomenon. We first investigate the conditions to achieve an attractive force on the object depending on its size and the device operating frequency. Second, we use a 3D acoustic model that describes the converging forces and torque that provide the self-centering and self-orienting capabilities. Third, a more advanced Computational Fluid Dynamics model based on the Navier-Stokes equations explains the small gap between the tip and the trapped object. The contactless manipulation capabilities of the device are demonstrated by picking, transporting, and releasing a Surface Mount Device in air. The presented manipulation concept can be an interesting alternative for manipulating delicate objects such as microelectromechanical devices, silicon dies, or micro-optical devices. (AU)

FAPESP's process: 17/27078-0 - Development of acoustic levitation systems
Grantee:Marco Aurélio Brizzotti Andrade
Support type: Regular Research Grants
FAPESP's process: 18/04101-0 - Development of novel ultrasonic devices for levitation of objects in Mid-air
Grantee:Marco Aurélio Brizzotti Andrade
Support type: Research Grants - Visiting Researcher Grant - International